title: [Epidemiological study on streptococcal infectious diseases and group A streptococci in Akita: classification of 21 serotypes of group A streptococci (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D006801:Humans; D007564:Japan; D013290:Streptococcal Infections / Q000453:epidemiology*; D013297:Streptococcus pyogenes